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Core plug size and interchange? #598173 12/04/2009 3:11 PM
Joined: Dec 2008 Posts: 1,922 Long Island P panic 'Bolter
panic 'Bolter P Joined: Dec 2008 Posts: 1,922 Long Island	Someone asserted (elsewhere) that the same "freeze" plug is used on all stovebolt (216, 235, 261) and GMC (248, 270, 302) engines. I don't have access to GMC, but based on the photos the GMC are smaller. I suspect both are something common, like other GM of the same age, but...? Does anyone have the modern part numbers, source, or actual size for either one? Thanks.

Re: Core plug size and interchange? panic #598191 12/04/2009 4:10 PM
Joined: Jul 2001 Posts: 3,887 Vancouver Island S squeeze Cruising in the Passing Lane
squeeze Cruising in the Passing Lane S Joined: Jul 2001 Posts: 3,887 Vancouver Island	expansion plug sizes will be listed here for each engine ... they'll be 'common' to the range of sizes available at any parts store, not identical for every GM engine Bill Moved over to the Passing Lane "When we tug a single thing in nature we find it attached to the rest of the world" John Muir "When we tug a single thing on an old truck, we find it falls off" me Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot

Re: Core plug size and interchange? squeeze #598193 12/04/2009 4:16 PM
Joined: Sep 2001 Posts: 29,269 Jarvisburg, NC, USA tclederman Bubba - Curmudgeon
tclederman Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 Jarvisburg, NC, USA	Here's the 1954 entries at Bill's link - RockAuto.com "free plugs" "freeze out plus" "expansion plugs" "core plugs" - block casting plugs. Tim 1954Advance-Design.com 1954 3106 Carryall Suburban 1954 3104 5-window pickup w/Hydra-Matic The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.

Re: Core plug size and interchange? tclederman #598233 12/04/2009 6:42 PM
Joined: Dec 2008 Posts: 1,922 Long Island P panic 'Bolter
panic 'Bolter P Joined: Dec 2008 Posts: 1,922 Long Island	Cool, found it, thanks.

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